Bab 365: Chapter 365: The one behind.

"I'm not sorry for what I did, and I would do it again if I got the same opportunity," Aurea put her left hand on the blade and slowly cut open her palm. "I didn't get a chance to fight you back then, sister. It's time to see who's stronger," she looked at the blade that had been coated with her own blood, making it pitch black.

Aurea blinked forward and slashed her sword right onto Beldathiel's neck. The shockwave was enough to extinguish the white flame that emblazed the whole area. But her sword got stuck and she couldn't push it further from Beldathiel's neck as the white flame reignited.

"You know the only one who can cut my skin is Ciel. You're just wasting your time trying to cut my head," Beldathiel slowly grabbed the blade. 

"Are you sure about that?" Aurea smirked as she glanced at someone behind Beldathiel. "This is just the start, so enjoy the time you have left," she added.